Improvement in water-indicators for steam-generators



waited. gister W. Gr. BELL, OF PITTSBURG, PENNSYLVANIA.

Letters Patent No. 98,464, dated January 4, 1870; antedated December 60,1869.

mrnovBMnNT 4nr WATER-INDICATORS ron srsAli/Lemire:aan.'ons.`

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom. it may 'concern Be it known that {,W. G. BELL, ofPittsburg, in the county' of Allegheny, and State of Pennsylvania, haveinvented a new anduseihllmprovement iu Steam-Generators; vand I dohereby declare that thefollowing is a full, clear, and exactdescription.

thereof, reference being had to the accompanying drawings, and to theletters of reference marked thereon.

The nature of my invention consists in the construction ,and arrangementof a float and valve with relation to the boiler, so that the oat will,through the medium of suitable gear, connected with the valve in thewatersupply pipe, cause the valve to close when thewater is at thedesired height in the boiler, and open gradually as the water becomeslow; and when .the water `is below the line of safety, to open the valveto its full capacity, and also give an alarm.

-To enable others skilled -in the art to make and use my invention, Iwill proceed to describe its con-l struction and operation.

In the accompanying drawings, which form part of my speciication- Figure1 is a side elevation .of a steam-generator provided with myimprovement.'

Figure 2 is an end view of the same.

Figure 3 represents a section of a valve which may be nsed in connectionwith the oat.

Figure 4is a transverse section of theA stuffing-box, cut through atline y, in which is placed a hollow pivot-shaft, and represents therelation of openings in the stuing-box and hollow shaft, when the waterto an opening, X, in the s'tnfling-box D, 'so that by rotating thehollow shaft f', the openings X and o will bebrought opposite eachother, as represented in fig. 4.

To the inner end of the shaft f' is attached an arm, e, onl the end ofwhich is secured afloat, A, which may be of any desired form, and madeof any suitable material.

On the outer end of the hollow 4shaft f is attached an arm, f, to whichis secured the rod h, for'manipulating the valve in the water-supplypipe J.

The valve in pipe J may be of any desired form, and the pipe may beconnected with and to the boiler in any known manner.

When the float 'is in the position represented in iig. 2, the valve inpipe J will be openedtolits full capacity, to allow the water tofowfreely through pipe J into the boiler, and the openings'X 'and o will beopposite to each other, thereby allowing steam to escape through thehollow shaitf, and thereby give the alarm as to the condition of waterin the boiler.

Ihen the float is in the position represented by .the dotted lines infig. 2, the valve in pipe J and th openings X and o will be closed.

Having thus described my invention,

What I desire to secure by Letters Patent, is-

1. The iloat A, attached toga hollow axis, which passes through thestntling-box, provided with a steam opening, X, said iioat, axis, andopening being soconstructed with relation to the water-supply as to givean alarm when the water is below the desired waterline in the boiler,substantially as described.

2. The combination and arrangement of the oat A wit-h the valve in thesupply-pipe, for regulating the ow of water into the boiler,substantially as herein described.

W. G. BELL.

Witnesses J AMES J. J oH'Ns'roN, OHAs. HABA WAY.

